Plastic Sheet
A plastic sheet including at least a core section and at least one surface layer on the core section. The core section contains a copolyester containing at least 45-50 mole % monomer units derived from a first aliphatic diol, 45-50 mole % derived from a first aromatic dicarboxylic acid, and 0.5-5 mole % monomer units derived from a second aliphatic diol and/or a second aromatic dicarboxylic acid. Each surface layer has a thickness of 2-100 .mu.m and contains the copolyester and 1-15 wt. % of a UV light-absorbing additive. The present invention excludes, however, plastic sheets having a core section and surface layer containing a copolyester that contains 50 mole % monomer units derived from terephthalic acid, 49.5-45 mole % monomer units derived from ethylene glycol, and 0.5-5 mole % monomer units derived from cyclohexane dimethanol. The plastic sheet of the present invention has a lower rate of crystallization, better surface quality and better resistance to solvents than conventional sheets.
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